Purchase Rock64 V3?

[richardk]

So I've seen that some people have the V3, and I particularly desire one (or a couple) based on the RTC battery.  How does a person specifically order a Rock64 V3, and not get old V2 stock?  Thanks.

[Luke]

So I've seen that some people have the V3, and I particularly desire one (or a couple) based on the RTC battery.  How does a person specifically order a Rock64 V3, and not get old V2 stock?  Thanks.

Only V3 ship at this time, as V2 is effectively phased out.

You need to specify to shipping if you require rev 3. Please see comments below.

[mcerveny]

Only V3 ship at this time, as V2 is effectively phased out.

I have very different info.
I recommend to send query to "sales at pine64 dot org".The last answer was:
- Rock64-1GB Version 3 estimate will be available in end of July.
- There are limited quantities for Rock64-4GB Version 3 available. Please make note when you order.

[Luke]

Only V3 ship at this time, as V2 is effectively phased out.

I have very different info.
I recommend to send query to "sales at pine64 dot org".The last answer was:
- Rock64-1GB Version 3 estimate will be available in end of July.
- There are limited quantities for Rock64-4GB Version 3 available. Please make note when you order.

Good to know and thank you for correcting me!

[mcerveny]

"sales at pine64 dot org" informed me that there are no plans to produce Rock64-1G or Rock64-2G version 3 for now.

[z4v4l]

actually Tllim said it a long time ago, that only the 4GB model will be LTS (due to maintenance complexities).
tell me, i probably tired everybody with this question, but still, are uhs-i modes working ok on v3? i mean without any soldering or stuff. is it stable? have you tested speeds? i guess it should deliver around 70+ MB/s with good cards, (given the 150 MHz limit put by rockchip).

[mcerveny]

TL;DR: UHS-I modes ? Yes ! It is working with factory integrated HW patch and patch to DTS. My cheap SanDisk Ultra "speed up to 80 MB/s" (UHS-I).

Code:

# iozone -e -I -a -s 100M -r 4k -r 1024k -i 0 -i 1 -i 2 <snip> random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 102400 4 4462 4574 12393 12390 9799 5164 102400 1024 12418 26892 67185 67292 66996 30158

Long version:

• * There is design fault in official "version 3 production schematics". The embedded diode in Q8502 changes FET to magic smoke or any component on 1.8V supply (VCC_18) not aware about 2.7V (3.3V - Source-Drain Diode Forward Voltage). Maybe published schema is total fake to disable copying (see also difference in 5V PIN2+PIN4).
  
  
  
  
• * Fault is resolved by factory patch (replaced Q8502 with some other rotated transistor and pullup resistor).
  
  
  
  
• * I had to prepare patch to DTS to activate voltage switching and enable UHS modes. This patch is not in standard distributions now.
  
  
• * Some testing and observation with patch.
  
  Code:

  # ### switched to 1.8V (gpio-30 is hi) # head -4 /sys/kernel/debug/gpio GPIOs 0-31, platform/pinctrl, gpio0: gpio-0 ( |vcc_host_5v ) out hi gpio-2 ( |vcc_host1_5v ) out lo gpio-30 ( |? ) out hi # ### vccio3 domain switched to 1.8V # tail -4 /sys/kernel/debug/regulator/regulator_summary vccq_sd 1 3 0 1800mV 0mA 1800mV 3300mV ff500000.dwmmc 1800mV 1950mV ff100000.syscon:io-domains 0mV 0mV deviceless 0mV 0mV # ### mmc1 (sdcard) is running 150 MHz # cat /sys/kernel/debug/mmc1/clock 150000000 # ### booted to ultra high speed # dmesg | grep mmc1 [ 4.379677] mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0) [ 4.520429] mmc_host mmc1: Bus speed (slot 0) = 150000000Hz (slot req 150000000Hz, actual 150000000HZ div = 0) [ 4.913212] mmc1: new ultra high speed SDR104 SDHC card at address aaaa [ 4.917711] mmcblk1: mmc1:aaaa SC16G 14.8 GiB
  
  
• * There are more tests with "Samsung EVO UHS-I (orange)". Also with 200MHz because Synopsys DesignWare Mobile Storage Host Controller was designed so as I wrote elsewhere.
  
  Code:

  # ### without patch # dmesg | grep mmc1 [ 3.529051] mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0) [ 3.581582] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 50000000Hz, actual 50000000HZ div = 0) [ 3.581652] mmc1: new high speed SDHC card at address 0001 [ 3.582126] mmcblk1: mmc1:0001 BB1QT 29.8 GiB # iozone -e -I -a -s 100M -r 4k -r 1024k -i 0 -i 1 -i 2 random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 102400 4 1876 2460 7732 7751 8763 1701 102400 1024 17982 13841 23239 23259 23261 12913 # ### with patch # dmesg | grep mmc1 [ 3.881125] mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0) [ 3.950459] mmc_host mmc1: Bus speed (slot 0) = 150000000Hz (slot req 150000000Hz, actual 150000000HZ div = 0) [ 4.465921] mmc1: new ultra high speed SDR104 SDHC card at address 0001 [ 4.494979] mmcblk1: mmc1:0001 BB1QT 29.8 GiB # iozone -e -I -a -s 100M -r 4k -r 1024k -i 0 -i 1 -i 2 random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 102400 4 3781 3598 14463 14509 14485 2230 102400 1024 28554 29160 67172 67270 67152 19281 # ### with "200MHz" patch (not recommended) # cat 200.patch diff --git a/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts b/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts index 9d848967..2b15b339 100644 --- a/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts +++ b/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts @@ -698,7 +698,7 @@ cap-mmc-highspeed; cap-sd-highspeed; disable-wp; - max-frequency = <150000000>; + max-frequency = <200000000>; num-slots = <1>; pinctrl-names = "default"; pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_dectn &sdmmc0_bus4>; # dmesg | grep mmc1 [ 3.333112] mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0) [ 3.402596] mmc_host mmc1: Bus speed (slot 0) = 200000000Hz (slot req 200000000Hz, actual 200000000HZ div = 0) [ 3.793574] mmc1: new ultra high speed SDR104 SDHC card at address 0001 [ 3.794066] mmcblk1: mmc1:0001 BB1QT 29.8 GiB # iozone -e -I -a -s 100M -r 4k -r 1024k -i 0 -i 1 -i 2 random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 102400 4 4024 3762 15374 15388 15330 1988 102400 1024 29919 30415 86725 87439 86829 17539

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